句意：
因?yàn)樗麄兙筒恍枰o 作為在高速公路上工作的很多職員 支付（工資）了
as 介詞,應(yīng)該是“作為”的意思那么pay as不是詞組了？pay后面直接跟介詞可以么？pay as 不是詞組，各自獨(dú)立的。（because they don't have to pay）（as many officers to work on the highways）=they don't have to pay to many officers (who) work as on the highways.用法比較的特殊，=后面的一句，(who work as)為定語(yǔ)從句修飾先行詞many officers.原句中，介詞as提前，引導(dǎo)的短語(yǔ)（不是句子）做pay的形式賓語(yǔ)。pay后面可以直接跟介詞，詞組pay off; pay out等。例句：If you don't subsidize ballet and opera, seat prices will have to go up to pay for it. 如果你不為芭蕾和歌劇提供補(bǔ)貼，就得提高劇場(chǎng)票價(jià)來(lái)為此買(mǎi)單。